man/cat1/tr.1.txt
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TR(1) User Commands TR(1)
NAME tr - translate or delete characters SYNOPSIS tr [OPTION]... SET1 [SET2] DESCRIPTION Translate, squeeze, and/or delete characters from stan- dard input, writing to standard output. -c, -C, --complement first complement SET1 -d, --delete delete characters in SET1, do not translate -s, --squeeze-repeats replace each input sequence of a repeated charac- ter that is listed in SET1 with a single occur- rence of that character -t, --truncate-set1 first truncate SET1 to length of SET2 --help display this help and exit --version output version information and exit SETs are specified as strings of characters. Most rep- resent themselves. Interpreted sequences are: \NNN character with octal value NNN (1 to 3 octal dig- its) \\ backslash \a audible BEL \b backspace \f form feed \n new line \r return \t horizontal tab \v vertical tab CHAR1-CHAR2 all characters from CHAR1 to CHAR2 in ascending order [CHAR*] in SET2, copies of CHAR until length of SET1 [CHAR*REPEAT] REPEAT copies of CHAR, REPEAT octal if starting with 0 [:alnum:] all letters and digits [:alpha:] all letters [:blank:] all horizontal whitespace [:cntrl:] all control characters [:digit:] all digits [:graph:] all printable characters, not including space [:lower:] all lower case letters [:print:] all printable characters, including space [:punct:] all punctuation characters [:space:] all horizontal or vertical whitespace [:upper:] all upper case letters [:xdigit:] all hexadecimal digits [=CHAR=] all characters which are equivalent to CHAR Translation occurs if -d is not given and both SET1 and SET2 appear. -t may be used only when translating. SET2 is extended to length of SET1 by repeating its last character as necessary. Excess characters of SET2 are ignored. Only [:lower:] and [:upper:] are guaranteed to expand in ascending order; used in SET2 while translat- ing, they may only be used in pairs to specify case con- version. -s uses SET1 if not translating nor deleting; else squeezing uses SET2 and occurs after translation or deletion. AUTHOR Written by Jim Meyering. REPORTING BUGS Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT Copyright (C) 2004 Free Software Foundation, Inc. This is free software; see the source for copying condi- tions. There is NO warranty; not even for MERCHANTABIL- ITY or FITNESS FOR A PARTICULAR PURPOSE. SEE ALSO The full documentation for tr is maintained as a Texinfo manual. If the info and tr programs are properly installed at your site, the command info tr should give you access to the complete manual. tr 5.3.0 November 2004 TR(1) |